/* ===========================================
   THERMOKIL LTD - CSS VARIABLES
   Dark & Fiery Theme - Design Tokens
   =========================================== */

:root {
    /* ===== PRIMARY COLORS - DARK & FIERY ===== */
    --deep-black: #0a0a0a;
    --charcoal: #1a1a1a;
    --smoke-grey: #2d2d2d;
    --dark-grey: #3a3a3a;
    --medium-grey: #555555;

    /* Fire Palette */
    --fire-red: #ff3b30;
    --fire-red-hover: #e62e2e;
    --heat-orange: #ff6b35;
    --flame-yellow: #ffa500;
    --ember-glow: #ff8c42;

    /* Organic Touch */
    --wood-brown: #8b4513;
    --natural-green: #4a6741;
    --success-green: #2f7432;

    /* Text Colors */
    --text-white: #ffffff;
    --text-light: #f5f5f5;
    --text-grey: #a0a0a0;
    --text-muted: #707070;
    --text-dark: #212121;

    /* ===== GRADIENTS ===== */
    --gradient-fire: linear-gradient(135deg, #ff3b30 0%, #ff6b35 50%, #ffa500 100%);
    --gradient-fire-vertical: linear-gradient(180deg, #ff3b30 0%, #ff6b35 50%, #ffa500 100%);
    --gradient-dark: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #2d2d2d 100%);
    --gradient-dark-overlay: linear-gradient(180deg, rgba(10, 10, 10, 0.95) 0%, rgba(26, 26, 26, 0.9) 100%);
    --gradient-hero-overlay: linear-gradient(180deg, rgba(10, 10, 10, 0.7) 0%, rgba(26, 26, 26, 0.85) 100%);

    /* ===== SPACING ===== */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 80px;
    --spacing-4xl: 100px;

    /* Section Spacing */
    --section-padding-desktop: 60px 0;
    --section-padding-mobile: 40px 0;

    /* ===== TYPOGRAPHY ===== */
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;

    /* Font Sizes */
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    --font-size-5xl: 3rem;      /* 48px */
    --font-size-6xl: 3.75rem;   /* 60px */

    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    /* ===== SHADOWS ===== */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.6);
    --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.7);
    --shadow-2xl: 0 16px 48px rgba(0, 0, 0, 0.8);

    /* Fire Glow Shadows */
    --shadow-fire-sm: 0 4px 12px rgba(255, 59, 48, 0.2);
    --shadow-fire-md: 0 6px 18px rgba(255, 59, 48, 0.3);
    --shadow-fire-lg: 0 12px 32px rgba(255, 59, 48, 0.4);
    --shadow-fire-xl: 0 16px 48px rgba(255, 59, 48, 0.5);

    /* Card Shadows */
    --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-card-hover: 0 12px 32px rgba(255, 59, 48, 0.3);

    /* ===== BORDERS ===== */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-2xl: 24px;
    --border-radius-full: 9999px;

    /* Border Colors */
    --border-dark: rgba(255, 255, 255, 0.1);
    --border-fire: rgba(255, 59, 48, 0.3);
    --border-fire-hover: rgba(255, 59, 48, 0.6);
    --border-fire-active: #ff3b30;

    /* ===== TRANSITIONS ===== */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.4s ease;
    --transition-smooth: 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);

    /* ===== Z-INDEX ===== */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;

    /* ===== MISC ===== */
    --max-width-container: 1200px;
    --max-width-content: 800px;
    --navbar-height: 80px;

    /* Animation Durations */
    --duration-fast: 200ms;
    --duration-base: 300ms;
    --duration-slow: 400ms;
    --duration-slower: 600ms;
}

/* Dark Theme Optimizations for OLED */
@media (prefers-color-scheme: dark) {
    :root {
        --deep-black: #000000;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --fire-red: #ff5544;
        --border-fire: rgba(255, 85, 68, 0.5);
    }
}